Here's a thing that's been annoying me for a long time: Using OS X 10.6, when you navigate through folders, expanding them to see their content, you sometimes want to create a new folder at the bottom of the file hierarchy.

Consider this example:

some
└── nested
└── folder

Now, having selected "folder", pressing ⌘⇧N results in the new folder being created at the top of the visible hierarchy, i.e. the currently open Finder element (which in my case is "test"):

├── some
│ └── nested
│ └── folder
└── untitled folder

This is not what I need. I will manually have to move the "untitled folder" to its target parent, which is hard to do if you 1) don't want use your mouse, 2) can't Cut → Paste a folder like in Windows and 3) the current folder contains a lot of elements.

What I need is:

some
└── nested
└── folder
└── untitled folder

The new folder should be created in the folder that I currently selected (i.e. "folder").

Note that:

I want this to be done with a keyboard shortcut. I don't use the mouse that often.

I don't want to use any other Finder view (e.g. Columns)

Is there any way this could be achieved?

I know the Automator action "New Folder", but it copies the selected Finder elements into the target folder, and it's inserted at the wrong level. For example, selecting "folder", the result will be something like:

tell application "Finder"
if insertion location as alias is desktop as alias or current view of Finder window 1 is in {icon view, column view} or selection is {} then
tell application "System Events" to tell process "Finder"
click menu item "New Folder" of menu 1 of menu bar item "File" of menu bar 1
end tell
return
end if
tell application "System Events" to key code 124 -- right arrow
set p to item 1 of (get selection)
try
set f to make new folder at p
on error
set f to make new folder at container of p
end try
set selection to f
end tell
tell application "System Events" to keystroke return